Ben van Kerkwyk

And so they are trying to buttress and support things that are going to fall.

I'm all for that.

But, I mean, there's a lot... Just the amount of erosion that it takes for that to happen to blocks like this, of this pneumolytic limestone, which is a very hard form of limestone, full of fossils.

And it's... You're talking like two, three feet in some places of erosion of limestone.

And if you look at the studies...

that have been done into limestone erosion rates, and there's been several.

They've studied them in coastal wave action environments where it's getting battered by waves.

They put it in rivers.

They put limestone cubes on the top of one of the governmental buildings in D.C.

and left it there and studied it over decades.

And they're like, okay, it's tiny amounts.

But in a normal weathering environment, this is assuming a lot more rainfall than what happens in Egypt, which gets very little rainfall, by the way.

But a place like...

Washington, D.C.

or somewhere where you get like 40 inches of rain a year, something like that.

It would take just normal weathering erosion to do two feet of erosion like this more than 100,000 years.

And that's – I think you can extend that because if – well, the thing is maybe there was more rainfall here at some point.

We know there was since about 4000 BC.

The African humid period was in place.

That's another big, I think, tell for what happened, particularly on the Giza Plateau and the sites in Egypt in that – one of the things that always mystified me about the Sphinx is like –